miim

## Options in the Settings Editor

You can modify the following registry entries in the Option section of the PC-DMIS Settings Editor:

- ExternalProbeheadType=MIH-S – Identifies the type of external probe head. See the previous section for the list of supported types. There is no built-in default for the type so it must be explicitly input. If this type is not set to a supported type PC-DMIS will not attempt to open or use the external probe head connection.

- ExternalProbeheadProtocol=COM2 9600 E,7,1 – Sets the communications protocol for the serial connection to the probe head. Specifies the comm port, baud rate, parity, data bits and stop bits settings. The default is COM2 9600 E,7,1. If the port is set to COM0, PC-DMIS will not attempt to open or use the external probe head connection even if the type is set to a supported value.

- ExternalProbeheadInitTimeout=5.0 – Specifies a timeout (floating point number in seconds) for response to the initial attempt to communicate with the probe head when PC-DMIS is started. The default is 5.0. If the timeout occurs, an error message will be displayed to indicate that the device is not responding.

A value of 0.0 disables this timeout.

- ExternalProbeheadStatusTimeout=2.0 – Specifies a timeout (floating point number in seconds) for response to the request for position/status. The default is 2.0. There is currently no error message if this timeout occurs. In order to prevent a "stackup" of position/status requests, PC-DMIS keeps track of having sent a position/status request and will not send another one until the response has been received. The main purpose of this timeout is to prevent a permanent wait for a response in case some comm error or probe head error state prevents receipt of a recognizable response. When this timeout occurs PC-DMIS will consider the position/status request to be permanently lost so that it will no longer wait for the response and will allow another position/status request to be sent.

A value of 0.0 disables this timeout.